Feeding appliance for ore-concentrators.



WI T/VESSES:

E. J. OCONNELL.

FEEDING APPLIANCE FOR ORE CONCENTRATORS,

APPLICATION FILED APR.13. I916.

Patented Nov; 6, 1917'.

UNITED STATES PATENT ()FFICE.

EDWARD J. OCONNELL, 0F FORT WAYNE, INDIANA, ASSIGNOR TO DEISTERCONGENTBATOR COMPANY, A G0:31P0131111311011 OF INDIANA.

Specification of Letters Patent.

Patented Nov. 6, 1917.

Application filed April 13, 1916. Serial No. 90,801.

To all whom it may concern:

Be it known that I, EDWARD J. OCON- NELL, a citizen of the United Statesof America, and resident of Fort WVayne, in the county of Allen andState of Indiana, have invented certain new and useful Improvements inFeeding Appliances for Ore-Concentrators, of which the following is aspecification.

This invention relates to improvements in feeding appliances for oreconcentrators of the reciprocating-table type, and the obj ect of theimprovementis to efiect a broader distribution of the pulp as it isapplied to the concentrating surface of the table than in ordinarypractice; and a further object is to utilize that'portion of the pulpwhich enters the feed-box, that contains the finer particles of solids,as a dressing agent for treating the settled solids that form in a massacross the surface of the table, thereby facilitating the saving of finevalues that are contained in the thinner portion of the pulp.

It is also an object to apply the dressingwater in the mannerhereinafter disclosed which effects a blending of the pulp anddressing-water.

The objects of the invention are accomplished by the constructionillustrated in the accompanying drawings in which Figure 1 is a planview of a concentrating table showing the invention applied thereto;

Fig. 2 is a side elevation of the feed-box and dressing-water launder;

Fig. 3 is a cross-section of Fig. 2 on the line 00-50 thereof;

Fig. 4: is a cross-section of Fig. 2 on the line yy thereof; and

Fig. 5 is a cross-section of Fig. 2 on the line 22 thereof.

Similar characters of reference indicate corresponding parts throughoutthe several views and referring now to the same:

1 is a reciprocating concentrating tableof a well known type, (2) is afeed-box mounted in connection with the table in the usual relationtherewith, and (3) is a dressingwater launder that is arranged inconnection with the table and in conjunction with the feed-box.

The feed-box is secured to the table in the ordinary manner and has aseries of feed apertures (4:) adjacent its bottom extending through itsside-wall (5) which is positioned along the splash-board at the feedside of the table. The feed-box has an extension (7) at its forward end,the bottom of which is a continuation of the bottom proper of thefeed-box, the side walls (5) and (5), however, are of less height thanthe major portion thereof.

The dressing-water launder (3) is situated so that its rear portionoverlaps the extension of the feed-box and is adapted to discharge itscontents of water through its various discharge openings (8) made in itsside adjacent the splash-board (6) and i which extend from one end ofthe box to the other including that portion thereof that overlaps theextension of the pulp feed-box.

The action of the table is reciprocal, and

is produced in the customary manner, and also the slant of the table,both laterally and longitudinally is in accordancewiththe customarypractice. .Riflles (not shown) also may be superimposed upon the tableas-desired, the intention being that the gravital flow of the mass ofsolids that settle upon the surface of the table will pass, asdischarged from the feed-box, across the surface of the table diagonallytoward the juncture of the concentrates discharge end (9) and thetailings discharge side (10) thereof, approximately along the dottedline (X) appearing on Fig. 1. The ore pulp is introduced into thefeed-box at the rear portion thereof as indicated by (12), and flowsforwardly throughout the length of the box. The coarser solids, as theytend to settle in the box drift toward the wall (5), owing to the slantof the bottom of the box, and pass through the openings (4) onto theadjacent surface of the table. The solids thus discharged from thefeed-box form in a mass and flow diagonally across the tableapproximately along the line (X The movement of the mass is influencedby both gravitation which force is toward the tailings discharge side(10), and by the impellent action of the table that tends to move themass toward the concentrates discharge end The thinner portion of thepulp that contains the very fine solids flows forwardly in the feed-boxover the coarser solids and becomes discharged from the extension (7)onto the surface of the deck ahead of the transient mass of coarsesolids. The thin pulp mingled with the dressingwater that is introducedonto the table in conjunction therewith flows gravitally across thetable, washing in its passage the mass of solids. The very fine mineralparticles in the thin pulp that flows with the dressingwater tend tomingle with the coarser values mov ng on the surface of the table andpass therewith to the concentrates dischar e end where they arerecovered with the general mass of separated metal.

By this construction a material portion of the necessary washing of themass of solids is eflected by the use of the fluid containing valuesthat are recovered therefrom in the washing process, and which values,together with the coarser values become cleansed with the interminglingdressing-water.

lVhat I claim is 1. in combination with a reciprocating concei'itratingtable, feed-box having a forward extension, and a series of dischargeopenings in one of its walls extending throughout its length includingthe exten sion, and a dressing-water launder having a series ofdischarge openings in one of its side walls extending throughout itslength, the rear portion of the launder being positioned so as tooverlap the said extension of the feed-box.

2. In combination with a reciprocating, concentrating table, a feed-boxadapted to distribute pulp upon the table, and a dressing-water launderadapted to distribute dressing-water thereon, said launder beingpositioned so as to overlap the forward part of the feed-box.

3. In combination with a. reciprocating, concentrating table, a feed-boxadapted to discharge pulp throughout its length upon the adjacentsurface of the table, and a dressingwater launder overlapping theforward part of the feed-box and adapted for the discharge ofdressing-water therefrom throughout its length upon the table.

In combination with a reciprocating, concentrating table, a feedbox fordistributing pulp upon the table at the feed side thereof and having anextension for conveying to and distributing the thinner portion of thepulp upon that surface of the table ahead of the coarse, and a.dressing-water launder positioned so as to discharge dressing-water inportions, with the thinner pulp as it passes from the extension of thefeed box and ahead of the pulp.

In testimony whereof I afiix my signature in presence of two witnesses.

EDYVARD J OCONNELL.

Vitnesses MATILDA METTLER, XV. Gr. BURNS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patent Washington, D. G.

